低共熔溶剂辅助水热法合成分层球状微/纳米ZnO晶体及其光催化性能

doi:10.7503/cjcu20140445

高等学校化学学报 ›› 2015, Vol. 36 ›› Issue (1): 165.doi: 10.7503/cjcu20140445

低共熔溶剂辅助水热法合成分层球状微/纳米ZnO晶体及其光催化性能

李奡麒, 陈玉娟, 胡晓宇, 卓克垒()

河南师范大学化学化工学院, 绿色化学介质与反应省部共建教育部重点实验室, 精细化学品绿色制造河南省协同创新中心, 新乡 453007

收稿日期:2014-05-12 修回日期:2014-12-16 出版日期:2015-01-10 发布日期:2014-12-16
作者简介:联系人简介: 卓克垒, 男, 博士, 教授, 主要从事溶液化学方面的研究. E-mail: klzhuo@263.net
基金资助:
国家自然科学基金(批准号: 21173070, 20973055)和河南省科技创新杰出人才计划(批准号: 124200510014)资助

Synthesis of Multi-layered Spherical ZnO Micro/Nano-crystals by Hydrothermal Method from Deep Eutectic Solvent and Their Photo Catalytic Performance^†

LI Aoqi, CHEN Yujuan, HU Xiaoyu, ZHUO Kelei^*()

Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453007, China

Received:2014-05-12 Revised:2014-12-16 Online:2015-01-10 Published:2014-12-16
Contact: ZHUO Kelei E-mail:klzhuo@263.net
Supported by:
Supported by the National Natural Science Foundation of China(Nos.21173070, 20973055) and the Plan for Scientific Innovation Talent of Henan Province, China(No.124200510014)

摘要/Abstract

摘要：

使用尿素-氯化胆碱低共熔溶剂(UCC-DES), 采用水热合成和反溶剂(乙醇)法, 以化工材质ZnO粉末为原料制备了分层的球状微/纳米ZnO晶体. 分析了反应时间、反溶剂的种类和含量对ZnO晶体形貌的影响以及ZnO晶体析出的原因. 并将制备的分层球状ZnO微/纳米晶体应用于光催化降解甲基橙. 结果表明, 制备的ZnO晶体对甲基橙有良好的光催化降解性能.

关键词: 低共熔溶剂, 反溶剂, 氧化锌, 微/纳米晶体

Abstract:

Multi-layered spherical ZnO micro/nano-crystals were synthesized by means of hydrothermal and antisolvent method from the urea-choline chloride deep eutectic solvent(UCC-DES). The effects of reaction time, amount and concentrations of antisolvents on the morphology of ZnO micro/nano-crystals were investi-gated, and the formation of ZnO micro/nano-crystals was discussed. Furthermore, the photocatalytic activities of the as-prepared ZnO crystals for the degradation of methyl orange were investigated. The results indicate that multi-layered spherical ZnO micro/nano-crystals exhibit a superior photocatalytic activity.The synthetic method of ZnO is facile, safe and environmentally friendly, it is in line with the requirements of green chemistry and should have widespread application in the future.

Key words: Deep eutectic solvent(DES), Antisolvent, ZnO, Micro/nanocrystals

中图分类号:

O644
O614.2

TrendMD:

李奡麒, 陈玉娟, 胡晓宇, 卓克垒. 低共熔溶剂辅助水热法合成分层球状微/纳米ZnO晶体及其光催化性能. 高等学校化学学报, 2015, 36(1): 165.

LI Aoqi, CHEN Yujuan, HU Xiaoyu, ZHUO Kelei. Synthesis of Multi-layered Spherical ZnO Micro/Nano-crystals by Hydrothermal Method from Deep Eutectic Solvent and Their Photo Catalytic Performance^†. Chem. J. Chinese Universities, 2015, 36(1): 165.

图/表 6

Table 1 Summarized ZnO samples and their corresponding synthesis conditions

Sample No.	Volume of ethanol aqueous solution/mL	Reaction time/h	Sample No.	Volume fraction of alcohol(%)	Volume of ethanol aqueous solution/mL	Reaction time/h
1	50	5	5	20	50	10
2	80	5	6	20	80	10
3	50	10	7	50	50	10
4	80	10	8	50	80	10

Fig.1 SEM images(A, B) and XRD patterns(C, D) of the ZnO samples prepared at 100 ℃ for 5 h in 50 mL(A, C) and 80 mL(B, D) water

Fig.2 SEM images(A, B) and XRD patterns(C, D) of the ZnO samples prepared at 100 ℃ for 10 h in 50 mL(A, C) and 80 mL(B, D) water

Fig.3 SEM images(A, B) and XRD patterns(C, D) of the ZnO samples prepared at 100 ℃ for 10 h in 50 mL(A, C) and 80 mL(B, D) 20% ethanol solution

Fig.4 SEM images(A, B) and XRD patterns(C, D) of the ZnO samples prepared at 100 ℃ for 10 h in 50 mL(A, C) and 80 mL(B, D) 50% ethanol solution

Fig.5 Degradation rate of methyl orange with sample 2(a) and sample 8(b)

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低共熔溶剂辅助水热法合成分层球状微/纳米ZnO晶体及其光催化性能

Synthesis of Multi-layered Spherical ZnO Micro/Nano-crystals by Hydrothermal Method from Deep Eutectic Solvent and Their Photo Catalytic Performance^†

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低共熔溶剂辅助水热法合成分层球状微/纳米ZnO晶体及其光催化性能

Synthesis of Multi-layered Spherical ZnO Micro/Nano-crystals by Hydrothermal Method from Deep Eutectic Solvent and Their Photo Catalytic Performance†

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Synthesis of Multi-layered Spherical ZnO Micro/Nano-crystals by Hydrothermal Method from Deep Eutectic Solvent and Their Photo Catalytic Performance^†